Cov qhov rooj iav zoo heev yog raug rho tawm haujlwm hauv qhov kub thiab txias ntawm ntau tshaj 1,000 degrees.Tom qab kev sim, lawv tuaj yeem khaws cia rau 90 feeb lossis ntau dua yam tsis muaj melting lossis tawg.

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